The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 1988
Filed:
Sep. 09, 1985
Applicant:
Inventors:
Engelbert Ciganek, Kennett Square, PA (US);
Bet-key Wong, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546 44 ; 546 66 ; 549291 ; 549 60 ; 549467 ;
Abstract
Imide intermediates for the preparation of analgesic and/or antagonist octahydrobenzofuro[3,2-e]-isoquinolines and octahydro-4a,7-ethano- and ethenobenzofuro[3,2-e]isoquinolines and processes for their preparation are provided. These imides have a formula selected from the group consisting of: ##STR1##